Pipeline sag depth measuring device and method

Abstract

The present invention provides a pipeline depression depth measurement device and method. In the pipeline depression depth measurement device, a pair of working boxes are slidably mounted on both ends of a movable box in a one-to-one correspondence, the bottoms of a pair of support frames are slidably mounted on the pair of working boxes in a one-to-one correspondence, the tops of a pair of support frames are slidably mounted on both ends of a fixed crossbar in a one-to-one correspondence, a pair of fixed limit seats are slidably mounted on the pair of working boxes in a one-to-one correspondence, a pair of movable limit seats are slidably mounted on the pair of working boxes in a one-to-one correspondence, and a laser ranging sensor is slidably mounted on the bottom of the fixed crossbar. Distance measurement is performed on depressions at different locations in the pipeline, adapting to pipelines of different diameters and lengths, thereby improving work efficiency. Fine adjustments can be made according to the shape of the pipeline depression, so that the pipeline depression and the ranging device remain on the same horizontal line. Through multiple sets of tests, the depth error of the depression can be reduced and accuracy can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas pipeline systems, and in particular to a pipeline sag depth measuring device and method. Background Art

[0002] Dents are localized elastic-plastic deformations caused by external impact or compression, resulting in a significant change in the curvature of the pipe surface. They are one of the most common pipeline defects. Dents can affect the pipe's pressure-bearing capacity and, under time-varying loads, can cause fatigue damage. Furthermore, significant deformations can affect pipeline throughput, hinder pig passage, and hinder pigging and internal inspection. Dent suitability assessments are typically conducted based on depth criteria to inform maintenance planning.

[0003] Therefore, accurate measurement of the depth of the depression is crucial to the impact on the evaluation results. Since depressions are usually caused by external impact or rock compression, the shape of the depression is irregular and often accompanied by elliptical deformation. In actual use, the existing pipeline depression distance measuring device is difficult to adjust the distance measuring device and the pipeline depression to a horizontal state, which makes it difficult to accurately measure the depth of the pipeline depression, making the measured results prone to errors and inaccuracies. In addition, the diameters of the measured pipelines are different, and the measured lengths are different, which makes the distance measuring device used by the staff have certain limitations, which greatly affects work efficiency.

[0004] Existing patents "CN201920716908.0 - A mobile pipeline sag depth measuring instrument", "202110618243.1 - An instrument and method for measuring sag parameters and weld parameters", "202022158566.0 - A sag depth measuring caliper", "201930132755.0 - A pipe outer wall sag measuring ruler", and "201721798113.6 - A steel pipe surface sag inspection device" all propose a mobile manually operated measurement tool that measures the depth of pipeline sags by using a telescopic ruler (sliding component) and a fixed ruler. Although this patented technology is easy to use, it is difficult to level the measuring ruler and the sag, and the measurement accuracy is greatly affected by the length of the fixed ruler and the level of manual operation. Patent "202210969799.X - Sag depth measurement method, device, equipment and storage medium" actually discloses a depth data processing and calculation method based on an acquired sag deformation cloud map. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a pipeline depression depth measuring device and method in view of the deficiencies in the prior art.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: A pipeline depression depth measuring device comprises: a pair of working boxes for supporting pipelines, a pair of supporting frames, a laser ranging sensor for measuring pipeline depression depth and providing depression data for regression of depression morphology, a fixed cross bar for supporting the laser ranging sensor, a movable box, a pair of fixed limit seats for supporting pipelines, a pair of movable limit seats for supporting pipelines, a plurality of adjusting wheels for rotating pipelines, and a plurality of movable wheels for facilitating rotation of pipelines, wherein the pair of working boxes are slidably mounted on both ends of the movable box in a one-to-one correspondence, the bottoms of a pair of supporting frames are slidably mounted on a pair of working boxes in a one-to-one correspondence, the tops of a pair of supporting frames are slidably mounted on both ends of the fixed cross bar in a one-to-one correspondence, the pair of fixed limit seats are slidably mounted on a pair of working boxes in a one-to-one correspondence, the pair of movable limit seats are slidably mounted on a pair of working boxes in a one-to-one correspondence, the laser ranging sensor is slidably mounted on the bottom of the fixed cross bar, the plurality of adjusting wheels are rotatably mounted on one side of the fixed limit seat, and the plurality of movable wheels are rotatably mounted on one side of the movable limit seat.

[0007] The beneficial effects of the technical solution of the present invention are: it integrates a precise laser ranging sensor and adopts a retractable sliding ranging structure, which can measure the distance of depressions at different positions of the pipeline and different positions of the depression area, and the distance between the measuring points is adjustable and the measuring points are dense, so that the measurement results are more accurate, the data can be accurately regressed to the depression morphology, and it is convenient to determine the maximum depth. The use of a variety of adjustable structures allows the entire device to handle pipelines of different diameters and lengths, improving the overall flexibility of the device and the repeatability of the measurement, and speeding up the work efficiency of the staff. It can be quickly leveled and centered, with good measurement repeatability and greater accuracy. It can make subtle adjustments according to the morphology of the pipeline depression, so that the pipeline depression and the ranging device remain on the same horizontal line, making it easy to quickly find the center of the depression and complete laser centering, so that the actual maximum depth of the depression can be measured. The setting of the adjusting wheel and the movable wheel allows the pipeline to be rotatably adjusted, which is convenient for fine rotation of the pipeline. Fine adjustments can be made according to the morphology of the pipeline depression, so that the pipeline depression and the distance measuring device are kept at the same horizontal line. Through multiple sets of tests, the depth error of the depression can be reduced and the accuracy of the distance measurement can be improved, thereby performing a circular scanning measurement of the depression, which is conducive to the regression of the overall morphology. In addition to measuring the depression depth, it can also scan the surface morphology of the pipeline.

[0008] Furthermore, the fixed limit seat and the movable limit seat are both L-shaped structures, and one side of the fixed limit seat and the movable limit seat are provided with an arc surface, the arc surface of the fixed limit seat is arranged corresponding to the arc surface of the movable limit seat, and the arc surface of the fixed limit seat and the movable limit seat are both installed with an anti-slip layer, multiple adjusting wheels are rotatably installed in the middle of the arc surface of the fixed limit seat, and one side of multiple adjusting wheels are exposed to the outside of the anti-slip layer of the fixed limit seat, and multiple movable wheels are rotatably installed in the middle of the arc surface of the movable limit seat, and one side of multiple movable wheels are exposed to the outside of the anti-slip layer of the movable limit seat.

[0009] The beneficial effect of adopting the above further technical solution is that the provision of the anti-slip layer can increase the friction between the inserted pipe and the fixed limit seat and the movable limit seat, thereby preventing the pipe from sliding.

[0010] Furthermore, a pair of first support columns and a first connecting rod are provided in the fixed limit seat, and a pair of second support columns and a second connecting rod are provided in the movable limit seat. The pair of first support columns are vertically installed in the fixed limit seat, and the two ends of the first connecting rod are rotatably installed on the top of the pair of first support columns in a one-to-one manner. The multiple adjusting wheels are fixedly installed on the first connecting rod, and a driving motor is provided on one side of the fixed limit seat, and the driving motor is connected to the first connecting rod; a pair of second support columns are vertically installed in the movable limit seat, and the two ends of the second connecting rod are rotatably installed on the top of the pair of second support columns in a one-to-one manner, and the multiple movable wheels are fixedly installed on the second connecting rod.

[0011] The beneficial effect of adopting the above-mentioned further technical solution is: the driving motor, the adjusting wheel and the movable wheel work in combination, the output end of the driving motor can drive the adjusting wheel to rotate, and the movable wheel has the effect of assisting the rotation, thereby slightly rotating the pipeline, and then the depression of the pipeline and the distance measuring device can be kept at the same horizontal line. Through multiple sets of tests, the depth error of the depression can be reduced and the accuracy of the distance measurement can be improved.

[0012] Furthermore, a telescopic connecting rod is provided between the pair of movable limiting seats, and both ends of the telescopic connecting rod are connected to the pair of movable limiting seats in a one-to-one correspondence.

[0013] The beneficial effect of adopting the above-mentioned further technical solution is that the setting of the telescopic connecting rod can keep a group of movable limit seats moving forward or backward together, thereby improving applicability.

[0014] Furthermore, a pair of working boxes are provided with a limit slide rail on the top, and the movable limit seat is slidably installed in the limit slide rail. One of the working boxes in the pair of working boxes is provided with a transmission rod, a threaded sleeve, a movable screw rod, a switch button and a servo motor. The switch button is connected to the servo motor, and the servo motor is connected to one end of the movable screw rod. The threaded sleeve is installed on the movable screw rod through a thread, and the two ends of the transmission rod are connected to the threaded sleeve and one of the movable limit seats in the pair of movable limit seats in a one-to-one manner.

[0015] The beneficial effect of adopting the above-mentioned further technical solution is that the output end of the servo motor can drive the movable screw to rotate and engage with the threaded sleeve. The propulsion force generated by the engagement drives the movable limit seat forward or backward through the transmission rod, so that the fixed limit seat and the movable limit seat can be quickly adjusted to adapt to pipes of different thicknesses.

[0016] Furthermore, the laser ranging sensor is connected to a lifting mechanism, and the laser ranging sensor is slidably installed at the bottom of the fixed cross bar through the lifting mechanism.

[0017] The beneficial effect of adopting the above-mentioned further technical solution is that the setting of the lifting mechanism facilitates the height adjustment of the laser ranging sensor and the relative position adjustment of the laser ranging sensor with respect to the fixed cross bar, so that the entire device can handle pipes of different diameters and lengths, thereby improving the overall flexibility of the device and speeding up the work efficiency of the staff.

[0018] Furthermore, the lifting mechanism includes: a fixed plate, a telescopic sleeve, an adjusting knob and a limit slider, the laser ranging sensor is installed on the fixed plate, the top of the fixed plate is connected to a pull-out plate, the pull-out plate is slidably inserted into the bottom of the telescopic sleeve, the limit slider is installed on the top of the telescopic sleeve, the limit slider is slidably installed on the bottom of the fixed cross bar, the adjusting knob is installed on the telescopic sleeve through a thread, and one end of the adjusting knob abuts against the pull-out plate.

[0019] The beneficial effects of adopting the above-mentioned further technical solution are: the laser ranging sensor and the fixing plate are designed to be detachable, which allows workers to quickly disassemble and inspect the laser ranging sensor when it is damaged. The combination of the telescopic sleeve, the pull-out plate, and the adjustment knob allows workers to adjust the placement height of the laser ranging sensor. The limit slider and the fixed crossbar are connected by a sliding connection, which allows workers to move the laser ranging sensor in parallel, thereby enabling rapid distance measurement at different locations on the pipeline.

[0020] Furthermore, a pair of the working boxes are slidably sleeved on both ends of the movable box in a one-to-one correspondence, and the tops of the pair of support frames are slidably inserted into both ends of the fixed cross bar in a one-to-one correspondence. A pair of fixing knobs are threadedly mounted on the fixed cross bar, and one end of the pair of fixing knobs is in one-to-one correspondence with the pair of support frames.

[0021] Alternatively, a pair of the working boxes are slidably inserted into the two ends of the movable box in a one-to-one correspondence, and a pair of the tops of the support frames are slidably sleeved on the two ends of the fixed cross bar in a one-to-one correspondence.

[0022] The beneficial effect of adopting the above-mentioned further technical solution is: when the staff needs to make quick adjustments according to the different sizes of the measured pipeline, the working box, support frame, movable box and fixed knob work together. When the staff pulls the working box out of the surface of the movable box to an appropriate distance, the support frame will also move from the inside of the fixed cross bar to the outside. When it is adjusted to a distance close to the measured pipeline, the fixing knob is tightened to fix the fixed cross bar and the support frame, so that the working box can adjust pipelines of different lengths.

[0023] Furthermore, a protective plate is provided on the side wall of the support frame, a fixing frame and a recording plate are provided on one of the pair of support frames, the recording plate is connected to one end of the fixing frame through a damping shaft, and the other end of the fixing frame is installed on one of the pair of support frames; a pair of working boxes are respectively provided with working grooves on the top, and a pair of anti-slip feet are respectively provided on the bottom of the pair of working boxes.

[0024] The beneficial effects of adopting the above-mentioned further technical solution are: by providing a rotatable recording board, workers can conveniently record in real time. After the distance measurement is completed, the measured data can be analyzed and processed, avoiding the need to re-measure due to forgetfulness. When workers need to record the measurement results, the setting of the fixed frame can provide relatively stable support for the recording board. The damping shaft at the intersection of the fixed frame and the recording board prevents the recording board from rotating during the writing process, which would affect the worker's normal recording. The provision of non-slip feet can improve the stability of the work box when placed.

[0025] In addition, the present invention also provides a pipeline sag depth measurement method, based on any one of the pipeline sag depth measurement devices described above, the pipeline sag depth measurement method includes:

[0026] S1. Adjust the distance between a pair of working boxes and the distance between a pair of fixed limit seats and a pair of movable limit seats so that the pipeline depression depth measuring device can adapt to pipelines of different lengths and diameters;

[0027] S2. Rotate the pipe by adjusting the wheel so that the pipe depression and the pipe depression depth measuring device remain on the same horizontal line;

[0028] S3, measuring the depth of the pipeline depression by laser ranging sensor;

[0029] S4. Slide and adjust the position of the laser distance measuring sensor along the fixed cross bar so that the laser distance measuring sensor corresponds to different positions of the pipeline depression, so as to measure the depression depth of the different positions of the pipeline depression.

[0030] The beneficial effects of the technical solution of the present invention include: integrating a precise laser ranging sensor and employing a retractable sliding ranging structure, it can measure the distance of depressions at different locations on the pipeline and at different locations within the depression area. The adjustable spacing between measuring points and the densely packed measurement points result in more accurate measurement results, allowing precise regression of the data to the depression's topography and facilitating the determination of the maximum depth. The use of multiple adjustable structures allows the device to handle pipelines of varying diameters and lengths, improving overall flexibility and measurement repeatability, and increasing operator efficiency. It can quickly adjust and center the device, achieving excellent measurement repeatability and accuracy. Fine adjustments can be made based on the pipeline's depression topography, ensuring that the pipeline depression and the ranging device are aligned horizontally, facilitating rapid identification of the depression's center and laser centering, thereby measuring the actual maximum depth of the depression. The provision of an adjusting wheel and a movable wheel allows the pipeline to be rotated and adjusted, enabling circumferential scanning of the depression, facilitating overall topography regression. Therefore, in addition to measuring depression depth, the device can theoretically also scan the pipeline's surface topography.

[0031] Advantages of additional aspects of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is one of the structural schematic diagrams of the pipeline depression depth measuring device provided in an embodiment of the present invention.

[0033] Figure 2 This is a second structural schematic diagram of the pipeline depression depth measuring device provided in an embodiment of the present invention.

[0034] Figure 3 This is a third structural schematic diagram of the pipeline depression depth measuring device provided in an embodiment of the present invention.

[0035] Figure 4 This is a fourth structural schematic diagram of the pipeline depression depth measuring device provided in an embodiment of the present invention.

[0036] Figure 5This is the fifth structural schematic diagram of the pipeline depression depth measuring device provided in an embodiment of the present invention.

[0037] Figure 6 This is a sixth structural diagram of the pipeline depression depth measuring device provided in an embodiment of the present invention.

[0038] Figure 7 This is the seventh structural schematic diagram of the pipeline depression depth measuring device provided in an embodiment of the present invention.

[0039] Figure 8 A schematic flowchart of a pipeline depression depth measurement method provided in an embodiment of the present invention.

[0040] Explanation of the accompanying numbers: 1. Working box; 2. Support frame; 3. Laser ranging sensor; 4. Fixed frame; 5. Recording board; 6. Fixed cross bar; 7. Movable box; 8. Fixed knob; 9. Fixed limit seat; 10. Movable limit seat; 11. Limit slide rail; 12. Transmission rod; 13. Threaded sleeve; 14. Movable screw rod; 15. Servo motor; 16. Drive motor; 17. Adjusting wheel; 18. Fixed plate; 19. Telescopic sleeve; 20. Adjusting knob; 21. Limit slider; 22. Working groove; 23. Switch button; 24. Protective plate; 25. First support column; 26. Movable wheel; 27. Anti-slip layer; 28. Anti-slip foot; 29. Pull-out plate; 30. First connecting rod; 31. Second support column; 32. Second connecting rod; 33. Telescopic connecting rod; 34. Lifting mechanism. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] like Figures 1 to 7As shown, an embodiment of the present invention provides a pipeline depression depth measuring device, comprising: a pair of working boxes 1 for supporting pipelines, a pair of supporting frames 2, a laser ranging sensor 3 for measuring pipeline depression depth and providing depression data for regression of depression morphology, a fixed cross bar 6 for supporting the laser ranging sensor, a movable box 7, a pair of fixed limit seats 9 for supporting pipelines, a pair of movable limit seats 10 for supporting pipelines, a plurality of adjusting wheels 17 for rotating pipelines, and a plurality of movable wheels 26 for facilitating rotation of pipelines, wherein the pair of working boxes 1 are slidably mounted on both ends of the movable box 7 in a one-to-one correspondence, the bottoms of the pair of supporting frames 2 are slidably mounted on the pair of working boxes 1 in a one-to-one correspondence, the tops of the pair of supporting frames 2 are slidably mounted on both ends of the fixed cross bar 6 in a one-to-one correspondence, the pair of fixed limit seats 9 are slidably mounted on the pair of working boxes 1 in a one-to-one correspondence, the pair of movable limit seats 10 are slidably mounted on the pair of working boxes 1 in a one-to-one correspondence, the laser ranging sensor 3 is slidably mounted on the bottom of the fixed cross bar 6, the plurality of adjusting wheels are rotatably mounted on one side of the fixed limit seat, and the plurality of movable wheels are rotatably mounted on one side of the movable limit seat.

[0043] The beneficial effects of the technical solution of the present invention are: it integrates a precise laser ranging sensor and adopts a retractable sliding ranging structure, which can measure the distance of depressions at different positions of the pipeline and different positions of the depression area, and the distance between the measuring points is adjustable and the measuring points are dense, so that the measurement results are more accurate, the data can be accurately regressed to the depression morphology, and it is convenient to determine the maximum depth. The use of a variety of adjustable structures allows the entire device to handle pipelines of different diameters and lengths, improving the overall flexibility of the device and the repeatability of the measurement, and speeding up the work efficiency of the staff. It can be quickly leveled and centered, with good measurement repeatability and greater accuracy. It can make subtle adjustments according to the morphology of the pipeline depression, so that the pipeline depression and the ranging device remain on the same horizontal line, making it easy to quickly find the center of the depression and complete laser centering, so that the actual maximum depth of the depression can be measured. The setting of the adjusting wheel and the movable wheel allows the pipeline to be rotatably adjusted, which is convenient for fine rotation of the pipeline. Fine adjustments can be made according to the morphology of the pipeline depression, so that the pipeline depression and the distance measuring device are kept at the same horizontal line. Through multiple sets of tests, the depth error of the depression can be reduced and the accuracy of the distance measurement can be improved, thereby performing a circular scanning measurement of the depression, which is conducive to the regression of the overall morphology. In addition to measuring the depression depth, it can also scan the surface morphology of the pipeline.

[0044] like Figures 1 to 7As shown, further, the fixed limit seat 9 and the movable limit seat 10 are both L-shaped structures, and one side of the fixed limit seat 9 and the movable limit seat 10 are provided with an arc surface, the arc surface of the fixed limit seat 9 is arranged corresponding to the arc surface of the movable limit seat 10, and the arc surface of the fixed limit seat 9 and the arc surface of the movable limit seat 10 are both installed with an anti-slip layer 27, and multiple adjusting wheels 17 are rotatably installed in the middle of the arc surface of the fixed limit seat 9, and one side of multiple adjusting wheels 17 are exposed on the outside of the anti-slip layer 27 of the fixed limit seat 9, and multiple movable wheels 26 are rotatably installed in the middle of the arc surface of the movable limit seat 10, and one side of multiple movable wheels 26 are exposed on the outside of the anti-slip layer 27 of the movable limit seat 10.

[0045] The beneficial effect of adopting the above further technical solution is that the provision of the anti-slip layer can increase the friction between the inserted pipe and the fixed limit seat and the movable limit seat, thereby preventing the pipe from sliding.

[0046] like Figures 1 to 7 As shown, further, a pair of first support columns 25 and a first connecting rod 30 are provided in the fixed limit seat 9, and a pair of second support columns 31 and a second connecting rod 32 are provided in the movable limit seat 10. A pair of first support columns 25 are vertically installed in the fixed limit seat 9, and the two ends of the first connecting rod 30 are rotatably installed on the top of a pair of first support columns 25 in a one-to-one manner. A plurality of adjusting wheels 17 are fixedly installed on the first connecting rod 30, and a drive motor 16 is provided on one side of the fixed limit seat 9, and the drive motor 16 is connected to the first connecting rod 30; a pair of second support columns 31 are vertically installed in the movable limit seat 10, and the two ends of the second connecting rod 32 are rotatably installed on the top of a pair of second support columns 31 in a one-to-one manner, and a plurality of movable wheels 26 are fixedly installed on the second connecting rod 32.

[0047] The beneficial effect of adopting the above-mentioned further technical solution is: the driving motor, the adjusting wheel and the movable wheel work in combination, the output end of the driving motor can drive the adjusting wheel to rotate, and the movable wheel has the effect of assisting the rotation, thereby slightly rotating the pipeline, and then the depression of the pipeline and the distance measuring device can be kept at the same horizontal line. Through multiple sets of tests, the depth error of the depression can be reduced and the accuracy of the distance measurement can be improved.

[0048] like Figures 1 to 7 As shown, further, a telescopic connecting rod 33 is provided between the pair of movable limiting seats 10 , and both ends of the telescopic connecting rod 33 are connected to the pair of movable limiting seats 10 in a one-to-one correspondence.

[0049] The beneficial effect of adopting the above-mentioned further technical solution is that the setting of the telescopic connecting rod can keep a group of movable limit seats moving forward or backward together, thereby improving applicability.

[0050] like Figures 1 to 7 As shown, further, a pair of the working boxes 1 are provided with a limiting slide rail 11 on the top, and the movable limiting seat 10 is slidably installed in the limiting slide rail 11. A transmission rod 12, a threaded sleeve 13, a movable screw rod 14, a switch button 23 and a servo motor 15 are provided on one of the working boxes 1 in the pair of working boxes. The switch button 23 is connected to the servo motor 15, and the servo motor 15 is connected to one end of the movable screw rod 14. The threaded sleeve 13 is installed on the movable screw rod 14 through a thread, and the two ends of the transmission rod 12 are connected to the threaded sleeve 13 and one of the movable limiting seats 10 in the pair of movable limiting seats 10 in a one-to-one manner.

[0051] The beneficial effect of adopting the above-mentioned further technical solution is that the output end of the servo motor can drive the movable screw to rotate and engage with the threaded sleeve. The propulsion force generated by the engagement drives the movable limit seat forward or backward through the transmission rod, so that the fixed limit seat and the movable limit seat can be quickly adjusted to adapt to pipes of different thicknesses.

[0052] like Figures 1 to 7 As shown, further, the laser ranging sensor 3 is connected to a lifting mechanism 34 , and the laser ranging sensor 3 is slidably installed at the bottom of the fixed cross bar 6 through the lifting mechanism 34 .

[0053] The beneficial effect of adopting the above-mentioned further technical solution is that the setting of the lifting mechanism facilitates the height adjustment of the laser ranging sensor and the relative position adjustment of the laser ranging sensor with respect to the fixed cross bar, so that the entire device can handle pipes of different diameters and lengths, thereby improving the overall flexibility of the device and speeding up the work efficiency of the staff.

[0054] like Figures 1 to 7 As shown, further, the lifting mechanism 34 includes: a fixed plate 18, a telescopic sleeve 19, an adjusting knob 20 and a limit slider 21, the laser ranging sensor 3 is installed on the fixed plate 18, the top of the fixed plate 18 is connected to a pull-out plate 29, the pull-out plate 29 is slidably inserted into the bottom of the telescopic sleeve 19, the limit slider 21 is installed on the top of the telescopic sleeve 19, the limit slider 21 is slidably installed at the bottom of the fixed cross bar 6, the adjusting knob 20 is installed on the telescopic sleeve 19 by a thread, and one end of the adjusting knob 20 is abutted against the pull-out plate 29.

[0055] The beneficial effects of adopting the above-mentioned further technical solution are: the laser ranging sensor and the fixing plate are designed to be detachable, which allows workers to quickly disassemble and inspect the laser ranging sensor when it is damaged. The combination of the telescopic sleeve, the pull-out plate, and the adjustment knob allows workers to adjust the placement height of the laser ranging sensor. The limit slider and the fixed crossbar are connected by a sliding connection, which allows workers to move the laser ranging sensor in parallel, thereby enabling rapid distance measurement at different locations on the pipeline.

[0056] like Figures 1 to 7 As shown, further, a pair of the working boxes 1 are slidably sleeved on both ends of the movable box 7 in a one-to-one correspondence, and the tops of a pair of the support frames 2 are slidably inserted into both ends of the fixed cross bar 6 in a one-to-one correspondence. A pair of fixing knobs 8 are threadedly mounted on the fixed cross bar 6, and one end of the pair of fixing knobs 8 is in one-to-one correspondence with the pair of support frames 2.

[0057] Alternatively, a pair of the working boxes are slidably inserted into the two ends of the movable box in a one-to-one correspondence, and a pair of the tops of the support frames are slidably sleeved on the two ends of the fixed cross bar in a one-to-one correspondence.

[0058] The beneficial effect of adopting the above-mentioned further technical solution is: when the staff needs to make quick adjustments according to the different sizes of the measured pipeline, the working box, support frame, movable box and fixed knob work together. When the staff pulls the working box out of the surface of the movable box to an appropriate distance, the support frame will also move from the inside of the fixed cross bar to the outside. When it is adjusted to a distance close to the measured pipeline, the fixing knob is tightened to fix the fixed cross bar and the support frame, so that the working box can adjust pipelines of different lengths.

[0059] like Figures 1 to 7 As shown, further, a protective plate 24 is provided on the side wall of the support frame 2, and a fixing frame 4 and a recording plate 5 are provided on one of the pair of support frames 2. The recording plate 5 is connected to one end of the fixing frame 4 through a damping shaft, and the other end of the fixing frame 4 is installed on one of the pair of support frames 2; a pair of working boxes 1 are respectively provided with working grooves 22 on the top, and a pair of anti-slip feet 28 are respectively provided on the bottom of the pair of working boxes 1.

[0060] The beneficial effects of adopting the above-mentioned further technical solution are: by providing a rotatable recording board, workers can conveniently record in real time. After the distance measurement is completed, the measured data can be analyzed and processed, avoiding the need to re-measure due to forgetfulness. When workers need to record the measurement results, the setting of the fixed frame can provide relatively stable support for the recording board. The damping shaft at the intersection of the fixed frame and the recording board prevents the recording board from rotating during the writing process, which would affect the worker's normal recording. The provision of non-slip feet can improve the stability of the work box when placed.

[0061] An embodiment provided by the present invention: a pipeline depression depth measuring device includes a working box 1, a support frame 2 and a laser ranging sensor 3, the middle part of both sides of the working box 1 is threadedly connected to the support frame 2, the top of the support frame 2 is plugged with a fixed cross bar 6, a protective plate 24 is installed on the surface of the support frame 2, and a fixing knob 8 is threadedly connected at the intersection of the support frame 2 and the fixed cross bar 6.

[0062] When the staff needs to make quick adjustments according to the different sizes of the measured pipelines, the working box 1, the support frame 2, the movable box 7 and the fixed knob 8 work together. When the staff pulls the working box 1 out of the surface of the movable box 7 to an appropriate distance, the support frame 2 will also move out from the inside of the fixed cross bar 6 to the outside. When it is adjusted to a distance close to the measured pipeline, the fixing knob 8 is tightened to fix the fixed cross bar 6 and the support frame 2, so that the working box 1 can be adjusted to pipelines of different lengths.

[0063] like Figure 3 and Figure 4 , an embodiment provided by the present invention includes a fixed limit seat 9 and a movable limit seat 10, a laser ranging sensor 3 is provided below the fixed cross bar 6; a set of limit slide rails 11 are provided on both sides of the top of the working box 1, and a set of movable limit seats 10 are slidably connected inside the set of limit slide rails 11, and a set of fixed limit seats 9 are fixedly installed at the rear ends of both sides of the top of the working box 1, and the position of the movable limit seat 10 and the fixed limit seat 9 is kept horizontal, and the surfaces of the set of fixed limit seats 9 and the set of movable limit seats 10 are provided with an anti-slip layer 27. A driving motor 16 is installed on one side of the fixed limit seat 9, and a first support column 25 is installed on one side of the inner bottom wall of the fixed limit seat 9. The top of the first support column 25 is connected to the adjusting wheel 17. The intersection of the first support column 25 and the adjusting wheel 17 is connected to the first connecting rod 30, and the top of the first connecting rod 30 is connected to the output end of the driving motor 16. One side of the inner bottom wall of the movable limit seat 10 is connected to the movable wheel 26 through the second support column 31, and the extension distances of the adjusting wheel 17 and the movable wheel 26 are both higher than the surface of the anti-slip layer 27.

[0064] When the staff needs to make precise adjustments to the depression of the pipeline, the setting of the anti-slip layer can increase the friction between the inserted pipeline and the fixed limit seat 9 and the movable limit seat 10, thereby preventing the pipeline from sliding. The driving motor 16, the adjusting wheel 17 and the movable wheel 26 work together. The output end of the driving motor 16 can drive the adjusting wheel 17 to rotate, and the movable wheel 26 has the effect of assisting the rotation, thereby slightly rotating the pipeline, so that the depression of the pipeline and the distance measuring device (pipeline depression depth measuring device) can be kept at the same horizontal line. Through multiple sets of tests, the depth error of the depression can be reduced and the accuracy of the distance measurement can be improved.

[0065] like Figure 5 As shown, an embodiment of the present invention includes a servo motor 15 and a transmission rod 12, a transmission rod 12 is fixedly installed in the middle of the bottom of the movable limit seat 10, and the transmission rod 12 is slidably connected to the inside of the limit slide rail 11, a threaded sleeve 13 is fixedly installed at the bottom end of the transmission rod 12, and the internal thread of the threaded sleeve 13 is connected to a movable screw rod 14, one side of the top of the working box 1 is electrically connected to a switch button 23, a servo motor 15 is installed on one side of the surface of the working box 1, and the switch button 23 is electrically connected to the servo motor 15, the output end of the servo motor 15 is connected to the top of the movable screw rod 14, and a telescopic connecting rod 33 is installed on one side of a group of movable limit seats 10.

[0066] The servo motor 15, the movable screw rod 14, the threaded sleeve 13 and the transmission rod 12 work in combination. The output end of the servo motor 15 can drive the movable screw rod 14 to rotate and engage with the threaded sleeve 13. The propulsion force generated by the engagement drives the movable limit seat 10 to move forward or backward through the transmission rod 12, so that the fixed limit seat 9 and the movable limit seat 10 can be quickly adjusted to adapt to pipes of different thicknesses. The setting of the telescopic connecting rod 33 can keep a group of movable limit seats 10 moving forward or backward together, thereby improving applicability.

[0067] like Figure 6 and Figure 7 As shown, an embodiment of the present invention includes a laser ranging sensor 3 and a telescopic sleeve 19, the back of the laser ranging sensor 3 is threadedly connected to a fixed plate 18, a pull-out plate 29 is installed in the middle of the top of the fixed plate 18, the top of the pull-out plate 29 is sleeved with the telescopic sleeve 19, and an adjusting knob 20 is threadedly connected at the intersection of the pull-out plate 29 and the telescopic sleeve 19, a limit slider 21 is installed at the top of the telescopic sleeve 19, and the surface of the limit slider 21 is slidably connected to the bottom of the fixed cross bar 6.

[0068] When the staff needs to measure the distance to different positions of the measured pipeline, the laser ranging sensor 3 and the fixed plate 18 adopt a detachable design. When the laser ranging sensor 3 is damaged, it is convenient for the staff to quickly disassemble and inspect it. The combination of the telescopic sleeve 19, the pull-out plate 29 and the adjusting knob 20 can facilitate the staff to adjust the placement height of the laser ranging sensor 3. The combination of the limit slider 21 and the fixed cross bar 6 adopts a sliding connection, which can facilitate the staff to move the laser ranging sensor 3 in parallel, so that it can quickly measure the distance to different positions of the pipeline.

[0069] like Figure 1 As shown, an embodiment of the present invention includes a fixing frame 4 and a recording plate 5, the fixing frame 4 is threadedly installed in the middle of one side of the support frame 2, the front section of the fixing frame 4 is connected to the recording plate 5, and a damping shaft is provided at the intersection of the fixing frame 4 and the recording plate 5, the interior of the working box 1 is slidably connected to the movable box 7, a working groove 22 is provided in the middle of the top of the working box 1, and anti-slip feet 28 are fixedly installed at the four corners of the bottom of the working box 1.

[0070] When recording measurement results, the mounting bracket 4 provides stable support for the recording board 5. The damping shaft at the intersection of the mounting bracket 4 and the recording board 5 prevents the recording board 5 from rotating during recording, which could affect the worker's ability to record. The anti-slip feet 28 enhance the stability of the work box 1 when placed.

[0071] like Figure 8 As shown, in addition, the present invention also provides a pipeline depression depth measurement method, based on any one of the pipeline depression depth measurement devices described above, the pipeline depression depth measurement method includes:

[0072] S1. Adjust the distance between a pair of working boxes and the distance between a pair of fixed limit seats and a pair of movable limit seats so that the pipeline depression depth measuring device can adapt to pipelines of different lengths and diameters;

[0073] S2. Rotate the pipe by adjusting the wheel so that the pipe depression and the pipe depression depth measuring device remain on the same horizontal line;

[0074] S3, measuring the depth of the pipeline depression by laser ranging sensor;

[0075] S4. Slide and adjust the position of the laser distance measuring sensor along the fixed cross bar so that the laser distance measuring sensor corresponds to different positions of the pipeline depression, so as to measure the depression depth of the different positions of the pipeline depression.

[0076] The beneficial effects of the technical solution of the present invention include: integrating a precise laser ranging sensor and employing a retractable sliding ranging structure, it can measure the distance of depressions at different locations on the pipeline and at different locations within the depression area. The adjustable spacing between measuring points and the densely packed measurement points result in more accurate measurement results, allowing precise regression of the data to the depression's topography and facilitating the determination of the maximum depth. The use of multiple adjustable structures allows the device to handle pipelines of varying diameters and lengths, improving overall flexibility and measurement repeatability, and increasing operator efficiency. It can quickly adjust and center the device, achieving excellent measurement repeatability and accuracy. Fine adjustments can be made based on the pipeline's depression topography, ensuring that the pipeline depression and the ranging device are aligned horizontally, facilitating rapid identification of the depression's center and laser centering, thereby measuring the actual maximum depth of the depression. The provision of an adjusting wheel and a movable wheel allows the pipeline to be rotated and adjusted, enabling circumferential scanning of the depression, facilitating overall topography regression. Therefore, in addition to measuring depression depth, the device can theoretically also scan the pipeline's surface topography.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for measuring the depth of a pipeline depression, characterized in that: include: A pair of working boxes for supporting pipelines, a pair of supporting frames, a laser ranging sensor for measuring pipeline depression depth and providing depression data for regression of depression morphology, a fixed cross bar for supporting the laser ranging sensor, a movable box, a pair of fixed limit seats for supporting pipelines, a pair of movable limit seats for supporting pipelines, a plurality of adjusting wheels for rotating pipelines and a plurality of movable wheels for facilitating rotation of pipelines, a pair of the working boxes are slidably mounted on both ends of the movable box in a one-to-one correspondence, a pair of the bottoms of the supporting frames are slidably mounted on the pair of working boxes in a one-to-one correspondence, a pair of the tops of the supporting frames are slidably mounted on both ends of the fixed cross bar in a one-to-one correspondence, a pair of the fixed limit seats are slidably mounted on the pair of working boxes in a one-to-one correspondence, a pair of the movable limit seats are slidably mounted on the pair of working boxes in a one-to-one correspondence, the laser ranging sensor is slidably mounted on the bottom of the fixed cross bar, a plurality of adjusting wheels are rotatably mounted on one side of the fixed limit seat, and a plurality of movable wheels are rotatably mounted on one side of the movable limit seat.

2. A pipeline depression depth measuring device according to claim 1, characterized in that: The fixed limit seat and the movable limit seat are both L-shaped structures, and one side of the fixed limit seat and the movable limit seat are provided with an arc surface. The arc surface of the fixed limit seat is arranged corresponding to the arc surface of the movable limit seat, and the arc surface of the fixed limit seat and the movable limit seat are both installed with an anti-slip layer. Multiple adjusting wheels are rotatably installed in the middle of the arc surface of the fixed limit seat, and one side of multiple adjusting wheels is exposed to the outside of the anti-slip layer of the fixed limit seat. Multiple movable wheels are rotatably installed in the middle of the arc surface of the movable limit seat, and one side of multiple movable wheels is exposed to the outside of the anti-slip layer of the movable limit seat.

3. The pipeline depression depth measuring device according to claim 1, characterized in that: A pair of first support columns and a first connecting rod are provided in the fixed limit seat, a pair of second support columns and a second connecting rod are provided in the movable limit seat, the pair of first support columns are vertically installed in the fixed limit seat, the two ends of the first connecting rod are rotatably installed on the top of the pair of first support columns in a one-to-one correspondence, a plurality of adjusting wheels are fixedly installed on the first connecting rod, a driving motor is provided on one side of the fixed limit seat, and the driving motor is connected to the first connecting rod; A pair of the second support columns are vertically installed in the movable limiting seat, two ends of the second connecting rod are rotatably installed on the top of the pair of the second support columns in a one-to-one correspondence, and a plurality of the movable wheels are fixedly installed on the second connecting rod.

4. A pipeline depression depth measuring device according to claim 1, characterized in that: A telescopic connecting rod is provided between the pair of movable limiting seats, and both ends of the telescopic connecting rod are connected to the pair of movable limiting seats in a one-to-one correspondence.

5. The pipeline depression depth measuring device according to claim 1, characterized in that: A pair of working boxes are provided with a limit slide rail on the top, and the movable limit seat is slidably installed in the limit slide rail. One of the working boxes in the pair of working boxes is provided with a transmission rod, a threaded sleeve, a movable screw rod, a switch button and a servo motor. The switch button is connected to the servo motor, and the servo motor is connected to one end of the movable screw rod. The threaded sleeve is installed on the movable screw rod through a thread, and the two ends of the transmission rod are connected to the threaded sleeve and one of the movable limit seats in the pair of movable limit seats in a one-to-one manner.

6. The pipeline depression depth measuring device according to claim 1, characterized in that: The laser distance measuring sensor is connected to a lifting mechanism, and the laser distance measuring sensor is slidably installed on the bottom of the fixed cross bar through the lifting mechanism.

7. A pipeline depression depth measuring device according to claim 6, characterized in that: The lifting mechanism includes: a fixed plate, a telescopic sleeve, an adjusting knob and a limiting slider. The laser ranging sensor is installed on the fixed plate. The top of the fixed plate is connected to a pull-out plate. The pull-out plate is slidably inserted into the bottom of the telescopic sleeve. The limiting slider is installed on the top of the telescopic sleeve. The limiting slider is slidably installed at the bottom of the fixed cross bar. The adjusting knob is installed on the telescopic sleeve through a thread, and one end of the adjusting knob abuts against the pull-out plate.

8. The pipeline depression depth measuring device according to claim 1, characterized in that: A pair of working boxes are slidably sleeved on both ends of the movable box in a one-to-one correspondence, and the tops of a pair of support frames are slidably inserted into both ends of the fixed cross bar in a one-to-one correspondence. A pair of fixing knobs are threadedly mounted on the fixed cross bar, and one end of the pair of fixing knobs is in one-to-one correspondence with the pair of support frames. Alternatively, a pair of the working boxes are slidably inserted into the two ends of the movable box in a one-to-one correspondence, and a pair of the tops of the support frames are slidably sleeved on the two ends of the fixed cross bar in a one-to-one correspondence.

9. The pipeline depression depth measuring device according to claim 1, characterized in that: A protective plate is provided on the side wall of the support frame, and a fixing frame and a recording plate are provided on one of the pair of support frames. The recording plate is connected to one end of the fixing frame through a damping shaft, and the other end of the fixing frame is installed on one of the pair of support frames; a pair of working boxes are respectively provided with working grooves on the tops, and a pair of anti-slip feet are respectively provided on the bottoms of the pair of working boxes.

10. A method for measuring the depth of a pipeline depression, characterized in that: Based on the pipeline sag depth measuring device according to any one of claims 1 to 9 above, the pipeline sag depth measuring method includes: S1. Adjust the distance between a pair of working boxes and the distance between a pair of fixed limit seats and a pair of movable limit seats so that the pipeline depression depth measuring device can adapt to pipelines of different lengths and diameters; S2. Rotate the pipe by adjusting the wheel so that the pipe depression and the pipe depression depth measuring device remain on the same horizontal line; S3, measuring the depth of the pipeline depression by laser ranging sensor; S4. Slide and adjust the position of the laser distance measuring sensor along the fixed cross bar so that the laser distance measuring sensor corresponds to different positions of the pipeline depression, so as to measure the depression depth of the different positions of the pipeline depression.

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